Calibrating a Guage using Deadweight Tester

Calibrating at the bench with a deadweight tester A deadweight tester (DWT) is a method of pressure calibration that is done in bench applications especially when accuracy and reliabilityis required. Calibrations are performed at the bench for convenience and to maintain reference conditions. Reference conditions are necessary to achieve the reference accuracy of the device under test and the calibration standards. Reference accuracy may be required to maintain the necessary test uncertainty ratios (TUR). To perform the test: The pressure gauge should be mounted in the same orientation (vertical or horizontal) as in the process. Measurement points should be distributed uniformly over […]

Read more

HART Smart Pressure Transmitter Calibration

How to calibrate a HART Smart Pressure Transmitter using The Fluke 754?   The accuracy and technology design of smart pressure measurement devices has totally improved in the past few year. Many old calibration instruments are unable to calibrate pressure transmitters nowadays due to  its high accuracy. Higher technologies are required in order to calibrate state od the art pressure transmitters.   Verifying the performance of a HART smart pressure transmitter as will as and adjusting it requires a number of tools. Performing all this is never been easier with a HART enabled calibrator like the Fluke 754. It simplifies the task and reduces the tools you need to carry.   Procedure: […]

Read more

What is Calibration?

Whats is Calibration? There are too many definitions of calibration and some are a lot more complicated than the process itself. One simplest definition is that, Calibration is: The process of comparing an instruments’s accuracy to known standards and adjusting it to meet those standards. Calibration of an instrument is checked at several points throughout its calibration range. The calibration range is the region between limits within which a quantity is measured. received or transmitted. The limits are defined by zero and span values specific to that instrument. Why do we need to calibrate? New instruments are calibrated to make […]

Read more